2014 Chevrolet Impala Release Date – 2014 Chevrolet Impala release date held at the end of the year with a complete transformation of the passenger car market occupancy. 2014 Chevrolet Impala starting debut in 2012 New York Auto Show. 2014 Chevrolet Impala was redesigned flagship sedan is built on the strong heritage of the Impala nameplate by offering expressive style, a more refined interior and offers a pleasant driving experience. 2014 Chevrolet Impala will be offered in various models of the LS, LT and LTZ, with the assembly process at the GM Detroit-Hamtramck, Mich., and Oshawa, Ontario facility.